<template>

  <div class="container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download" />
          <a :href="'/static/01.xlsx'">点击下载模版</a>
        </el-tag>
      </el-form-item>

      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API+'/eduService/subject/addSubject'"
          name="file"
          accept=".xlsx"
        >
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload"
          >上传到服务器</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>

</template>

<script>
    export default {
      name: "save",

      data() {
        return {
          BASE_API: process.env.BASE_API, // 接口API地址
          importBtnDisabled: false, // 按钮是否禁用,
          loading: false
        };
      },

      created() {

      },

      methods:{
        //点击按钮上传文件到接口里面
        submitUpload() {
          this.importBtnDisabled = true;
          this.loading = true;
          // js: document.getElementById("upload").submit()
          this.$refs.upload.submit();
        },
        //上传成功
        fileUploadSuccess(response) {
          //提示信息
          this.loading = false;
          this.$message({
            type: "success",
            message: "添加课程分类成功"
          });
          //跳转课程分类列表
          //路由跳转
          this.$router.push({ path: "/subject/list" });
        },
        //上传失败
        fileUploadError() {
          this.loading = false;
          this.$message({
            type: "error",
            message: "添加课程分类失败"
          });
        }
      }

    }
</script>

<style scoped>

</style>
